Defect structure of irradiated PH13-8Mo steel

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Defect structure of irradiated PH13-8Mo steel. / Van Renterghem, Wouter; Al Mazouzi, Abderrahim; Van den Berghe, Sven; Decréton, Marc (Peer reviewer).

In: Journal of Nuclear Materials, Vol. 360, No. 2, 01.02.2007, p. 128-135.

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@article{355250cdf7e340f2b4bd98c6af2bf866,
title = "Defect structure of irradiated PH13-8Mo steel",
abstract = "PH13-8Mo bolts, which are considered for use in the ITER reactor, were irradiated up to doses of 0.5, 1 and 2 dpa. The microstructure was investigated with transmission electron microscopy and its evolution is discussed with reference to the mechanical properties. PH13-8Mo is a precipitation hardened martensitic steel, but a large amount of austenite has been observed as well. The precipitation hardening results from the formation of small coherent NiAl precipitates in the martensite phase. Their size, size distribution and density are found to be unaffected by neutron irradiation. The dislocations in the martensite phase are mainly a/2111 type screw dislocations, whereas in the austenite phase mainly a/2110 type screw dislocations are present. The line dislocation structure did not change during irradiation, but small irradiation induced defects were observed. Using the Orowan model, it is argued that the latter are responsible for the irradiation hardening.",
keywords = "PH13-8Mo steel, transmission electron microscopy, microstructure, irradiation defects",
author = "{Van Renterghem}, Wouter and {Al Mazouzi}, Abderrahim and {Van den Berghe}, Sven and Marc Decr{\'e}ton",
note = "Score = 10",
year = "2007",
month = feb,
day = "1",
language = "English",
volume = "360",
pages = "128--135",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",
number = "2",

}

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TY - JOUR

T1 - Defect structure of irradiated PH13-8Mo steel

AU - Van Renterghem, Wouter

AU - Al Mazouzi, Abderrahim

AU - Van den Berghe, Sven

A2 - Decréton, Marc

N1 - Score = 10

PY - 2007/2/1

Y1 - 2007/2/1

N2 - PH13-8Mo bolts, which are considered for use in the ITER reactor, were irradiated up to doses of 0.5, 1 and 2 dpa. The microstructure was investigated with transmission electron microscopy and its evolution is discussed with reference to the mechanical properties. PH13-8Mo is a precipitation hardened martensitic steel, but a large amount of austenite has been observed as well. The precipitation hardening results from the formation of small coherent NiAl precipitates in the martensite phase. Their size, size distribution and density are found to be unaffected by neutron irradiation. The dislocations in the martensite phase are mainly a/2111 type screw dislocations, whereas in the austenite phase mainly a/2110 type screw dislocations are present. The line dislocation structure did not change during irradiation, but small irradiation induced defects were observed. Using the Orowan model, it is argued that the latter are responsible for the irradiation hardening.

AB - PH13-8Mo bolts, which are considered for use in the ITER reactor, were irradiated up to doses of 0.5, 1 and 2 dpa. The microstructure was investigated with transmission electron microscopy and its evolution is discussed with reference to the mechanical properties. PH13-8Mo is a precipitation hardened martensitic steel, but a large amount of austenite has been observed as well. The precipitation hardening results from the formation of small coherent NiAl precipitates in the martensite phase. Their size, size distribution and density are found to be unaffected by neutron irradiation. The dislocations in the martensite phase are mainly a/2111 type screw dislocations, whereas in the austenite phase mainly a/2110 type screw dislocations are present. The line dislocation structure did not change during irradiation, but small irradiation induced defects were observed. Using the Orowan model, it is argued that the latter are responsible for the irradiation hardening.

KW - PH13-8Mo steel

KW - transmission electron microscopy

KW - microstructure

KW - irradiation defects

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_72931

UR - http://knowledgecentre.sckcen.be/so2/bibref/3905

M3 - Article

VL - 360

SP - 128

EP - 135

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - 2

ER -

ID: 104591